參數(shù)資料
型號(hào): PM2329
英文描述: Telecommunication IC
中文描述: 通信集成電路
文件頁數(shù): 65/162頁
文件大?。?/td> 1581K
代理商: PM2329
Proprietary and Confidential to PMC-Sierra, Inc and for its Customers
Internal Use
Document ID: PMC-2010146, Issue 4
68
PM2329 ClassiPI Network Classification Processor Datasheet
Figure 21 Organization of Rules
3.4.3 Priority of Rules
There is an inherent priority structure built into the Rule Memory, with each of the 16K rules having a
distinct priority. The priority of a rule is a function of the cell number. Rules at lower cell numbers have
higher priority. Thus, priority is first determined by its row number, then its column number, and lastly by
its position within the rule pack. Rule 0 has the highest priority and Rule 16,383 has the lowest priority.
The priority structure allows prioritization of match results when multiple rules match the packet key data.
In the case of multiple matches in the PSE, the matched rule (cell) numbers are returned in the order of
their priority.
3.4.4 Rule Partitions
A partition is defined as a collection of rule packs. The selection of rule packs that belong to a partition is
decided by specifying row numbers and column numbers. The row numbers are specified as a range, while
the column numbers are defined by an enable bit for each column. For example, Rows 6 to 9 and Columns
13 and 15 can be defined as a partition. Separately, Rows 3 to 4 and Columns 0, 1, 2
15 can be defined as
R
0
63
62
61
COLUMNS
5
4
15
Cell 0
Cell 255
Cell 16383
Cell 16128
RULE PACK
Rule 0
Rule 15
1
2
3
6
7
8
9
10
OC3
OC1
OC1
OC2
0
1
13
14
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